5. Open Management Studio if it is not already open.
6. Open any job and edit job step setting focus to the Command edit box.
7. Press Ctrl+Shift+F5 to invoke new target registration dialog, fill in the required parameters. For target Caption enter some descriptive name, for example, SSMS Edit Job dialog
8. Click OK, wait 3 seconds and check if that works for you.

Note: The window class name may differ in different SSMS and Net versions. I pasted the one I got on my system